Waste renovating apparatus



May 30, 1933. a PEARCE 1,911,527

WASTE RENOVATING APPARATUS Filed Feb. 14, 1930 5 Sheets-Sheet l INVENTQRATTORN EYJ May 30, 1933. A s PEARCE 1,911,527

WASTE RENOVATING APPARATUS Filed Feb. 14, 1930 5 Sheets-Sheet 2 INVENTORHM)? 5. fi mc ATTO RN EYJ May 30, 1933. E. PEARCE 1,911,527

WASTE RENOVAT I NG APPARATUS Filed Feb. 14, 1930 5 Sheets-Sheet 3INVENTOR ATTORNEY-1 May 30, 1933. PEARCE 1,911,527

WASTE RENOVATING APPARATUS Filed Feb. 14, 1930 5 Sheets-Sheet 4ATTORNEY.

Filed Feb. 14, 1950 5 Sheets-Sheet 5 INVENTOR 5. fez/re ATTORN EYJPatented May 30, 1933 UNITED STATES PATENT OFFICE EDWIN S. PEARCE,

F INDIANAPOLIS, INDIANA, ASSIGNOR TO- THE RAILWAY SERVICE INDIANA WASTERENOVATING APPARA'IIITS Application filed February 14, 1930. Serial No.428,388.

The invention disclosed in this application is for apparatus forrenovating journal box packing. v

Heretofore, journal box packing has been renovated by using apparatus ofthe type disclosed in the patent to McCarthy No.

1,483,361, issued February 12, 1924, and the present invention isintended to carry forward the method disclosed in that patent byemploying apparatus which will render the McCarthy method more pliable,more effective and substantially continuous in operation by the use of acombined a itator and conveyor in a number of the di erent steps of theprocess, to wit, in the soaking, drying, cleaning, and washing steps.

' Another object of the invention is to arrange these agitator andconveyor units in tanks or casings provided with other suitablemechanism so that they may be utilized in the soaking step, the dryingand cleaning steps, and the washing-step, as stated, and provide theother machines necessary, such as oil removing devices or extractors,impregnators, oil sumps, a complete oil renovating apparatus forcleaning the wash oil and the dirty soaking oil.

The invention will be readily appreciated and understood from thefollowing description, drawings and claims.

In the drawings, ingshown as separate views, by reason of the limitationas to size of the drawings, but they. are virtually one view, the righthand end of 'Fig. '1 being closely adjacent the left hand end of Fig.2,and the right hand end of Fig. 2 being closely adjacent the left handend of Fig. 3. Fig. 1 shows the soaking tank, dirty oil sump andextractor arrangement; Fig. 2 shows the dryer, cleaner and washingmechanism; and Fig. 3 shows the extractors for the wash, the scales, theimpregnator, and the wash oil cleaner or renovator; Figs. 4, 5, and 6,like Figs. 1, apparatus shown in Figs. 1, 2 and 3, divided as in thosefigures; Fig. 4 being a top plan view of the dirty oil sump, the soakingtank, arrangement, the extractor; Fig. 5 is a top plan view of thedryer, cleaner and wash Figs. 1, 2 and 3 are be 2 and 3, are top planviews of the apparatus; and Fig. 6 shows the wash extractors, theimpregnator, and the wash oil cleaner or renovator; Fig. 7 is a detailedside elevation of a combined agitator and conveyor unit utilized in thesoaking tank, the dryer, the cleaner, and the wash; Fig. 8 is an endelevation; Fig. 9 is a top plan view of one of the blades or sections ofthe unit; Fig. 10 is a side elevation of another form of extractor;Figs. 11 and 12 are top plan views of said other form; Fig. 13 is asection on the line 13-13 of Fig. 12; and Fig. 14 is a View partly inelevation and section showing the oil renovating and processingapparatus.

In the apparatus shown in the drawings, 1 represents a suitable dirtyoil sump conveniently arranged at a low level and provided with aheating coil 2 connected to any suitable steam supply and, preferably,arranged in the bottom of the tank to maintain the dirty oil, containedtherein, in a heated condition. The heat of the oil in this tankis,preferably, at substantially 200. In any event it should be maintainedat a temperature below the fractional distillation of any of the usefuloil ingredients. This tank is connected by a pipe 3, extending to apoint near the bottom and above the coil 2, with a suitable oil pump 4driven by amotor 5. This pump is connected'to two pipe branches, 6leading to any suitable oil cleaner or renovator, and 7 leading to thesoaking tank to be described. These two pipes 6 and 7 are providedrespectively with valves 8 and 9. The sump isfurther provided with.arelatively large inlet pipe 10 having a valve 11 controlling thedischarge of dirty oil from the soaklng tank. The

sump tank is still further provided with another pipe 12 leading to itfrom the extracting device or devices to be described.

At a higher level than the dirty oil sump is a soaking tank 13preferably divided into two sections by a transverse vertical partition14, and the bottom of the tank on each side of the partition 14 ishopper shaped, providing two hopper bottoms 15 and 16, both connected bysuitable connections with the large pipe 10, so thatpractically all thematerial from the two portions of this soaking tank may be dischargedinto the dirty oil sump, 1. The pipe 7 from the pump 4 leads into thesoaking tank in th portion to the left side of the partition 14 or, whatmight be termed, the primary portion. As the oil accumulates in thisprimary portion it over-flows the partition 14 and supplies the hotdirty soaking oil to the secondary side of the partition 14. The oillevel in both of these portions is preferably the height of thepartition 14. Each of the primary and secondary portions of the soakingtank is provided with a separate heating coil 17, supplied with steam orother heating medium from any suitable source, and arranged to heat theoil in its soaking tank portion. Both of these heating coils arearranged near the bottom of their respective tank portions, and abovethe hopper bottoms 15 and 16, as shown.

These tanks may be utilized, as described, and the inbound dirty packingis charged into them in sequence, first into the primary and then intothe secondary portion.

I prefer, however, to provide a combined agitator and conveyor for notonly assisting the soaking and heating of the inbound dirty packing butalso for agitating it and conveying it from the primary portion to thesecondary portion and from the latter to the next piece of apparatus.These agitator and conveyor units not only facilitate and expedite theheating of the inbound dirty packing but also serve to'shake out some ofthe undesirable material, such as sand, cinders, babbitt, and any othermaterial capable of being shaken out at this stage. They further serve.to completely mingle the dirty sump oil and the oil carried by thepacking and remove some of the undesirable lint elements present in thewaste, such as short ends, relatively long lint and the finer lint whichremains in suspension in the oil. The finer lint particles, however,have no great tendency'to settle, especially in the process of theagitation in the soaking tank, but are more or less uniformlydistributed and in suspension throughout the oil part. It is quiteobvious that more undesirable materials would be discharged into the oilbath in the primary stage than in the secondary stage.

This agitator and conveyor unit is very clearly shown in Figs. 7, 8, and9, and it comprises a suitable pair of supports 18 and a pair 19, theformer being shorter than the latter. At the upper ends of each pair ofsupports are suitable bearings 20 which receive a crank shaft 21, havinga plurality of crank parts. These two crank shafts are inter-connectedby a chain 22 engaging sprockets 23 arranged on the two shafts, one ofthese shafts may be driven by a suitable motor 24. Both of the shafts 21have the side portions 28, extending .same number of cranks and allcranks, preferably, are indexed in the same relative position and havethe same throw. The two aligning cranks comprising one crank of thelower shaft and the alignlng cranks of the upper shaft have bearings inbrackets 25 and 26, Fig. 7, secured to the top inner portion 27 of aU-shaped channel bar having down along the sides of the brackets 25 and26. There is one of these bars for each of the pairs of lower and uppercranks, as shown. The top portion of each channel bar is punched out orotherwise equipped to provide next to its lower end a group of saw teeth29 while the intermediate portion is provided with upwardly andforwardly curved teeth 30 arranged in two longitudinal groups with theteeth of the groups staggered, while the' last third portion may beprovided with wire mesh 31. One of these agitator and conveyor units isarranged in each of the primary and secondary portions or compartmentsof the soaking tank, as shown, and the arrangement is such that when theinbound dirty packing is charged into the primary ortion it is receivedby the unit, agitated 1n the bath of oil, shredded, picked, pulled, andloosened up by these agitators and at the same time conveyed through thedirty oil to a point above the partition 14, where it is discharged intothe secondary portion or compartment onto the lower end of the unit inthat portion or compartment. Here the packing is again agitated,flufled, etc., in the bath of oil in this compartment and conveyed fromthis soaking tank portion to the next piece of apparatus.

The apparatus following the soaking tank 'is in the form of a centrallydisposed table 32 arranged between two extractors. Each extractorcomprises a curb 33, a basket 34, any suitable driving means 35 and adischarge pipe 36 connected to a valve 37, also connected to pipe 12. Asshown, there are two of these extractors arranged in opposite ends ofthe table, and the hot oil soaked waste delivered from the soaking tankoperation is charged onto this table ready for the operatives to pack itin the extractor. When the waste is packed in one of the extractors, thebasket is set in motion and the oil, which has not drained out throughthe drain boardeffect of the last agitator and conveyor unit, isextracted and delivered to the curb from whence it finds its way to thedirty oil sump. The extracting operation is carried to the point ofuniformly removing the oil from the waste part and leaving such wastepart in a stage of fiber saturation only with all bodies of oil removedfrom the interstices among the fibres.

In place of the centrifugal extractors shown in Fig. l, for example, asuitable vacuum extracting device shown in Figs. 10 to 13, may beprovided, and it comprises a vacuum box 120 connected to any suitablesource of vacuum through pipe 120' and provided with a slot 121 at itstop the width of the mass of material delivered from the upper end ofthe secondary agitator and conveyor unit above the top of the vacuum boxand traveling across it and of a width greater than the slot is onestretch of a reticulated conveyor 122, mounted on rollers 123 at the topand bottom. These rollers may be driven by any suitable mechanism suchas motor means 124. Above the conveyor is a brush comprising a backing125 supported in any suitable manner and carrying a mass of longbristles 126 adapted to bear upon the mat of the waste part upon theconveyor and press it down onto the slot or inlet of the vacuum box. Inthis way the oil part is removed from the waste part by a vacuum in amanner similar to the extract- ;ing operation and without thedisadvantage of the intermittent effect, resulting from the' use ofextracting.

The packing up to this stage in its course through the apparatus hasbeen separated into its oil part and its waste part, the former, withwhatever undesirables it may have removed, being in the two compartmentsof the soaking tank and in the sump, while the latter, the waste part,is fiber saturated only with all of the oil uniforml removed from all ofthe intersticesof the brous mass and ready for the next treatment.

Closely adjacent the table 32, and pref-- erably in alignment with it,is a waste part cleaning and washing apparatus comprising a chute 39leading to a cleaner housing 40 having an opening 41 at its front forthe entrance of the waste part as it is discharged from the extractorbaskets and placed in the chute 39. The cleaner housing 40 is providedwith a dome shaped top 42 leading to a suitable stack or pipe 43 forcarrying away any water or other vapors discharged, from the waste partby heat. This housing is provided with a rear partition 44 having anupper opening 45 therein, leading to a dry dirt removing apparatus, tobe described. Connected to the bottom of thehousing is a suitable airblower 46 adapted to project a stream of air onto suitable heating coils47 arranged in the bottom of the housing. This housing may be providedwith a suitable clean out door 48. The coils 47 are ar ranged in anupwardly inclined bank to permit of the use of one of thecombinedagitator and conveyor-units above described in connection with thesoaking tank. This unit is identical with those used in the soaking tankand, therefore, needs no detailed description at this point, it beingsufiicient to say that it is arranged to receive the waste part as it-is delivered through the cleaner housing 40 from the chute 39 andagitated .and conveyed through a heated current of air out of thishousing into the next washing apparatus. The action of this agitator andconveyor in this cleaner housing is such that it loosens upon the ballsof waste, shakes dirt therefrom, and gradually elevates it to state ofoil fiber saturation, and free to some extent of much of itsundesirables, such as undesirable fibers, lint not entrained with theoil, short ends, sand, cinders, dirt of all kinds and bits of metal,etc.

Adjacent to and preferably forming a part of this cleaner housing 40 isa dry dirt removing housing 49 communicating with the cleaner housing 40by the opening 45 and provided with a similar discharge opening 50 atrelatively the same level as the opening 45. This housing has a cleanout door 51 and is provided with one of the combined agitator andconveyor units used in the cleaner housing 40 and in the soaking tank.Its arrangement is such that it is upwardly inclined from .the receivingend and gradually slopes upward to the delivering opening 50. The lowerend receives the discharge of the waste part from the upper end of thecombined agitator and conveying unit inthe cleaner housing 40. Indeed,the agitator and conveyor unit of the housing 40 projects into thishousing 49 while the corresponding unit in this housing projects throughthe opening 50, as shown in Fig. 2. If necessary, this dry dirt removermay be provided with a transfer paddle comprising a shaft 52 driven byany suitable motor .means 52 and carrying suitable paddle arms 53 forhitting the back of the mass of waste as it is discharged from one unitto the other.

In this dry dirt remover the waste part is again agitated while stillhot from the preceding steps including the cleaner and soaking tank: andadditional foreign matter and undesirable material is removed from thewaste while it is being further flutled and uniformly torn apart. Thisdry dirt removing apparatus just described is followed by a washingapparatus and it comprises a tank 54 similar in all respects to a singlestage of the soaking tank already described. It comprises a hopperbottom 55 mately 200, and as the waste is agitated and moved throughthis bath of oil it collects some of the dirt and other foreign matternot heretofore removed, and in addition thereto washes out and collectsundesirable eign matter and leaving the fibers in substantially theiroriginal clean condition. Indeed, where colored waste strands appear inthe waste these colors are restored by the exchange of the dirty oilfilm in this stage. This stage is very important and differs in somerespects from the oil treating stage in the soaking tank, for example,because here the waste part treated is substantially dry or dehydrated,on the one hand, and has a better opportunity to be oil washed becauseof its having been fluifed and loosened by the cleaner. The agitation.in the soaking tank is important and does remove considerableundesirables, etc., but it must be borne in mind that the waste isballed and matted in the soaking tank and is in the process of beingheated and while it ultimately comes to approximately 200 in thissoaking stage it is so bound to its dirt, so to speak, and there is notthe opportunity in that stage for washing away the undesirables andclean the fibers as there is in this washing stage after the previoustreatments and agitations. Furthermore, in the first extractors,following the soaking tank, while the oil races through the fibers andcarries away some undesirables, including substantially all of the lintin suspension, the weight of the mass of oil soaked waste in theseextractors produces such a packing action on the waste part that aninsufficient amount of undesirables are removed.

Following the washing tank 54 there is a second extractor table 60preferably arranged between two extractors 61 and 62 similar in allrespects to those already described, and having a suitable oil drain 63connected to their curbs and leading to the drain pipe 56 of the cleanoil wash tank 54. 'A valve 64 is provided in this drain pipe 56 betweenthe pipe 63 and the wash tank, so that the desired level of oil may beretained in the washing tank.

In this second extractin stage following .the wash the action is one ofseparating the washing oil from the waste part leaving it in a conditionof. fiber saturation only with the distinction that the oil film, inthis case, is one of clean oil, whereas in the former extractingoperation the film was of dirty oil. As before stated, this wash step isvery important for further cleansing of the waste part and for leavingsuch waste part with the uniform fiber saturation of clean oil andwithout any deposits of oil in the interstices of the waste. Followingthis operation the waste is removed-from the baskets of the extractors,placed upon the table, and laid in suitable scales, generally indicatedat 65, in proper quantities. for charging into an impregnatorr Theimpregnator may be of any suitable form but is very conveniently of thetype set forth in my prior Patent No. 1,723,747, granted August 6th,1929, and generally speaking, comprises a cylindrical tank 66 closed atthe bottom and opened at the top and adapted to receive in the bottom aquantity of renovated oil or new oil through a pipe 67. This pipe 59 isalso connected to the ipe 6 for supplying such renovated or new oil, asmay be needed in the early stage of the apparatus. This oil is hot andis measured off in suitable quantities in the bottom of the tank 66.Fitting the tank is a weighted cover 68 manipulated by a suitablehoisting device 69 and adapted to bear down upon the waste which hasbeen charged from the weighing device 65 on top of the oil in the tank66. A suitable vacuum producing means is connected through a flexibletube indicated at 70 to this weighted cover 68 for removing the air frombelow the cover and within the chamber of the tank. The rate of loweringof the cover is that of the speed of immersion of the waste in the oil,which speed should be at the proper point commensurate with the uniformupward movement of the oil through all parts of the waste body. Finalivthe waste is entirely immersed and the oil is uniformly distributedthrough the waste part, resulting in the production of a journal boxpacking possessing maximum lubricating qualities and lacking in fine andcoarse lint and also lacking in other undesirables. Such a packingefii'ectivelv lubricates journal boxes and reduces the hot boxes per carmile, over packing not so treated or produced. Indeed, such a packing,in some respects, is better than a new packing made up of new waste andnew oil in that there has been a prolonged undisturbed association ofoil and waste with an accompanying bond between the oil and waste fiber.It might be well to note here that such a bond can only be produced by aprolonging association of waste and oil and results only from treatmentwhich removes moisture and permits a thorough contact of the oil withevery part of each fiber.

The washing oil is treated in a suitable oil cleaner or renovator andsuch a renovator comprises a tank 71 mounted at low level and havingareceiving compartment 7 2 connected to the pipe 56 leading from thewash tank 54 and the extractors 61 and 62. r.

- nected by .a siphon 78 to a third compartment or clean oil reservoir79. This reservoir is provided with a heating coil 80 for maintainingthis oil at the working temperature which is substantially 200.Extending through the bottom of this reservoir 79 is a disc arge pipe 81connected to a skimmer pipe 82 provided with a float 83. This pipe 81leads to a suitable pump 84 driven by a motor 85 connected to adischarge pipe 86 which branches into the pipe 59 on the one hand and apipe 87 leading to the oil processing plant. A return processed oil pipe88 branches off into the pipe 67 and also in a pipe 89 provided with avalve 90 and an extension leading to the top of the reservoir 79, sothat should the wash oil need replenishing in this reservoir 79 this maybe accomplished through the use of the pipe 89 and the valve 90.Periodically, the receiving compartment may be drained through a pipe 91provided with a valve at about 92 and leading to the pump 84 and in thisWay the foul condition of this receiving compartment may be disposed ofby pumping its dirty oil together with whatever undesirables which havecollected in the bottom of it, out through the pump 84 and to the oilprocessing apparatus through the pipe 87. In this case, of course, thevalve 59' in the pipe 59 is closed and the valve 86 is open. From theforegoing it will be seen that the washing oil,'for the most part, isrenovated or cleaned by the apparatus just described, which is in asense a filter. Such a filter may be used at this point for severalreasons. In the first place, the waste part in first extracting stage,has been relieved of the fine lint which goes into suspension in the oiland which will pass any practical filter. Secondly, the filtering meansdisclosed is one which permits subsidence of the oil in the receivingand subsidence compartments so that the oil in a more or less quiescentstate moving upwardly through the filtering element 76 and into thecollecting tank above it from which it passes periodically into thereservoir 79. This filtering pad collects also any moisture which maynot have been removed and which is present in the oil.

The renovation or processing of the oil from the sump tank 1 as well aslike treatment from time to time of the washing oil in connection withthe washing stage, may be accomplished by any suitable oil renovating orprocessing apparatus or method.

Such .an apparatus is disclosed in the application of Leonard D.Grisbaum, Serial No. 74,949, filed December 12, 1925, to which referencemay be had for a more complete description of the same.

Briefly described, and as shown in the drawings, this oil renovatingplant includes features as follows:

The oil from the sump is forced through the pipe 6 by the pump 4 to theline 59 leading to the pipe 87, also connected to the pump 84 whichdraws the oil from the receiving compartment 72 of the washing oilfiltering apparatus and conveys it to the oil renovating and processingplant. The latter includes three tanks D, E and F, respectively.

Tank Dhas a cylindrical body and conical base to the bottom of which thepipe 95 is connected. It is provided with a jacket 96 to which water maybe supplied by the pipe 97 and in which jacket is a steam heating coil98. At the top of the tank are one or more spray nozzles 99communicating with a hot water pipe 100 from tank 100a. This pipe 100also communicates with the jacket 96 to supply hot water thereto. In thetank D is placed a charge of a solution of a suitable alkali, such ascaustic soda. Water is supplied to the jacket and steam is passedthrough the heating coils 98 to raise the temperature even to a pointabove boiling, the water supply pipes being shut ofi' to hold the waterunder pressure. The oil to be cleaned is then admitted to the bottom ofthe tank and bubbles up through the alkali solution, producing asufficient agitation for the treatment. When a suflicient quantity ofoil has been admitted the tank is allowed to stand for an appreciabletime, say five hours,

at this higher temperature, and the heating.

under pressure stimulates the mixing action. Finally, the valve 99 inthe water supply, which comes from the open tank 100a, is opened,relieving the pressure in the jacket and permitting the temperature todrop to approximately boiling, in which condition the tank is maintainedfor another period of about five hours. The cover is now removed fromthe tank and hot water is sprayed onto the surface of the oil throughthe nozzles 99. This spraying is continued 'to thoroughly wash the oil.All soluble matter goes into solution and stays with the water, and thesolid matter, including dirt particles, which may have been suspended inthe oil, is carried down and settles with the sludge. The oil has thelower specific gravity and floats on the top of the water, while thesludge collects at the bottom. There are now three layers in tankD-first, at the top there is clean oil containing traces of chemicalsand water, second, the water, and third, the sludge.

The continued heating in tank D prior to the spraying or washing withwater breaks down or destroys part of the lint, such as the woolen oranimal fibers, and precipitates the remainder, such as cotton orvegetable fibers. It also produces chemical reactions .with chemicalimpurities, such as soaps, grease and the like, and makes them eithersoluble or precipitates them. As a consequence, when the water washingstep has been performed the oil in the top layer is free of lint andmechanical impurities and contains but a small portionv of chemicalimpurities with the moisture or water in it.

The oil in the upper layer is now drawn ofi through the pipe 101 andsupplied thereby to a perforated pipe 102 at the bottom of tank E, whichis filled with hot water. In said tank the oil rises in a greatly brokenup condition and accumulates above the water level and below a hollowplate 103 heated by steam circulated through it by the pipe 104. Saidplate is of bell form with a center opening or mouth and is preferablykept heated at about 250 F. As the rising oil strikes it any waterentrained in it is vaporized and vescapes. Above the hollow plate 103 isa cone 105 with a center opening 106. As the oil accumulates it finallyflows out through the center opening 106 and down the sides of the cone105 to a pipe 107 by which it is supplied to the tank F. The oil may betested to determine its chemical content and if some chemicals stillremain some clean hot water may be mixed with the oil in tank F forfurther washing and then drawn off through the pipe 108. In any event,the oil is supplied to tank F and permitted to collect therein bysettling with the oil on top and the water at the bottom. Finally thewater is drawn off and the tank F is then heated by the steam coil 109so as to vaporize and drive ofi any water by way of the pipe 110 beneathwhich is a baflle 111 to prevent oil loss by spattering or otherwise.This treatment dehydrates the oil and drives off all water, leaving aclear, clean usable oil free of chemicals and mechanical impurities,such as lint, dirt and the like. The recovered oil may be drawn off to atank 112 from which it is delivered to any place for use, such as to thepipe 87 by which oil is supplied to the various parts of the apparatusrequiring renovated or processed oil.

From the foregoing it will be seen that the inbound dirty packing isfirst charged into a bath of heated dirty sump oil where it is heated,agitated and delivered to a second hot soaking bath where it is againheated, agitated and delivered to the oil extracting stage. In the 'oilextracting stage the waste part is separated from the oil part so thatthe former is reducedin oil content to the point of fiber saturationonly without any bodies of oil remaining in the interstices of the wasteor between the fibers. The oil part at this point is charged withsubstantially all of the finely divided lint which remains in suspensionin the oil and passes down with it to the soaking tank, to be.

treated in the later oil renovating and processing plant or apparatus.The waste part, fiber saturated as above, is delivered to the cleaner.The cleaner apparatus comprises a heating and dehydrating part whereinthe waste is agitated and conveyed to the dry dirt remover. Here thewaste part is again agitated in an atmosphere of air to shake outadditional undesirables and conveyed therefrom to the washing stagewherein the waste part, flufi'ed and loosened by the cleaner, issubjected to a washing operation in clean or washing oil. Here the oilfilm is exchanged for a clean oil film and additional dirt and lint areremoved. This stage is particularly advantageous in that it not onlyimproves the appearance of the waste part but takes out longer fibersincapable of being suspended in the oil and undesirable in the packing.In this washing stage the waste part is agitated in and conveyed-throughthe oil and delivered to another oil extracting device which reduces theoil content of the waste part to a known minimum fiber saturationwithout bodies of oil in the spaces between the fibers. From thisextracting stage the waste is weighed out and delivered to animpregnator where it meets some of the renovated oil and results in theproductionof a renovated journal box packing.

The oil of the washing stage in the meantime is being filtered andcleaned and relieved of its undesirable long and short fibers which areremoved by the peculiar characteristics of the filtering means employed.

While the waste has been moving through its various treatments, the oilfrom the dirty oil sump as well as the dirty oil from the washing oilfilter is removed in quantities from time to time and treated and storedin the tank 112 ready to be returned to the apparatus for use in thetreatment.

It will be seen from the foregoing that the plant treats the waste partand the oil part without undue accumulation of oil and with the return,at the end, of the waste part and the oil part in a journal box packingready for use. The only additional oil and waste supplied being thatwhich is necessary to make up for losses, etc.

The U-shaped channel bars of the agitator and conveyor unit are open atthe bottom, and the top is also open through the screen portion 31through openings left when producing the projections 30 as well as thelouvers or teeth 29. As these channel bars are moved up and down intoand out of the oil bath they move the waste body up and down and at thesame time oil is projected through the openings in these channel bars inthe form of streams which pass in and throughthe waste body and cleanseit. It

is obvious that as the-body of waste is fiufi'ed and torn apart theprojected streams of oil will have ample opportunity to penetrate it.

Each of the channel bars may be equipped with the different uppersurface arrangements shown in Fig. 9, or the groups of bars in any ofthe different stages may be equipped with any one of these surfacearrangements, as for example the louvers 29.

What I claim is:

1. Renovating apparatus for journal box packing made up of a fibrouswaste part and an oil part, comprising an oil soaking tank unit; an oilremoving unit located adjacent said soaln'ng tank unit, a cleaning unitfor the waste part of the packing located adjacent said oil removingunit; an oil washing unit for said waste part located adjacent saidcleaning unit; means in said soaking tank unit for simultaneouslyagitating said packing, opening up the waste part thereof, and conveyingsaid packing through said soaking tank unit and delivering the same to apoint adjacent said oil removing unit; means in said cleaning unit forsimultaneously agitating the waste part of said packing and forconveying the same through said cleaning unit and delivering the sameinto said oil washing unit; and means in said washing unit forsimultaneously agitating and opening up the waste part of said packingand for moving said waste part through said unit.

2. Renovating apparatus for journal box packing made up of a fibrouswaste part and an oil part, comprising an oil soaking tank unit having apacking receiving end and a packing delivering end; oil removing unitadjacent the delivery end of said soaking tank unit; a cleaning meansfor the waste part of said packing and having a waste receiving endadjacent said oil removing means; means in said soaking tank unit forsimultaneously agitating the packing and for conveying said packingtherethrough and delivering the same to a point adjacent said oilremoving means; means in said cleaning unit for subjecting the wastepart of said packing to an atmosphere of air and heat; and means in saidcleaning unit for simultaneously agitating and opening up said wastepart and for conveying the same through said unit.

3. Renovating apparatus for journal box packing made up of a fibrouswaste part and an oil part comprising an oil soaking tank unit having apacking receiving end and a packing delivering end; oil removing meansadjacent the delivery end of said soaking tank unit; a cleaning unit forthe waste part of said packing and having a waste receiving end adjacentsaid oil removing means; means in said soaking tank unit forsimultaneously agitating the packing therein and for conveying saidpacking therethrough and delivering the same to a point adjacent saidoil removing means; means in said cleaning unit for subjecting the wastepart of the-packing therein toan atmosphere of air and heat, means insaid cleaning unit for simultaneously agitating and opening up saidwaste part and for conveying the same through said unit; an oil Washingunit having its waste receiving end adjacent the waste delivery end ofsaid cleaning unit; and means in said washing unit for simultaneouslyagitating said waste part in the oil therein and for conveying saidwaste part through said unit.

4. Renovating apparatus for journal box packing made up of a fibrouswaste part and an oil part, comprising an oil soaking tank unit having apacking receiving end and a packing delivering end; oil removing meansadjacent the delivery end of said soaking tank unit; a cleaning unit forthe waste part of said packing and having a waste receiving end adjacentsaid oil removing means; means in said soaking tank unit forsimultaneously agitating the packing therein and for conveying saidpacking therethrough and delivering the same to a point adjacent saidoil removing means; means in said cleaning unit for subjecting the wastepart of the packing therein to an atmosphere of air and heat; means insaid cleaning unit for simultaneously agitating and opening up saidwaste part and for conveying the same through said unit; an oil washingunit for said waste part having its waste-receiving end adjacent thewaste delivery end of said cleaning unit; means in said oil washing unitfor simultaneously agitating said waste part in the oil therein and forconveying said waste part through said unit; and oil removing meansadjacent the waste delivery end of said oil washing unit.

5. Renovating apparatus for journal box packing made up of a fibrouswaste part and an oil part, comprising a cleaning unit for the wastepart of said packing; said cleaning unit having a casing provided with awaste inlet opening and a waste outlet opening, a partition dividingsaid casing into a front chamber and a rear chamber and having anopening therethrough; said front chamber communicating with said inletopening and said rearnchamber communicating with said outlet opening,and means in each of said chambers for agitating the waste part thereinand for moving said waste part therethrough; one of said means extendingthrough said partition opening for conveying said waste part from one ofsaid chambers to the other of said chambers, and means for subjectingthe waste in one of said chambers to a heated air efi'ect.

In testimony whereof I hereby aifix my signature.

EDWIN S. PEARCE.

CERTIFICATE OF CORRECTION.

" Patent No. 1,911,521. May 30, 1933;

EDWIN S. PEARCE.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page 3,line 70, for upon" read "up"; page 7, line 38, claim 2, for "unit" read"means", and line 40, for "means" read "unit"; same page, line 119,claim 5, strike out the word "and"; and that the said Letters Patentshould be read with these corrections therein that the same may c Signedand seaied this 22nd day of August. A. D. 1933.

M. J. Moore.

(Seal) Acting Commissioner of Patents.

onform to the record of the case in the Patent Office.

